It's true alright.
As an example RedM quoted her daughter, who was at the game, on 33 minutes:
'We're playing it around at the back and not getting forward, crowd very restless.' Post 78.
There were also a number of clearly audible individual shouts of impatience and discontent from the crowd at about the same time.
It may have seemed different actually at the game in certain parts of the ground, but this was the clear impression on the radio, and from at least one person at AG.